866871 ÷ 80 
Let's see how many times 80 fits into 866871.

Step 1:
8 divided by 80 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 80

Going ahead to step 2:
When dividing 86 by 80, we get 1 with a remainder of 6.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 80 from 86 leaves us with 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 80

Advancing to step 3:
66 divided by 80 is 0 with a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Deduct 0 from 66 and we're left with 66.
Take the next digit (8) from the dividend and append it to 66, then repeat: 668 / 80

Let's proceed to step 4:
80 can be fit into 668 8 times, resulting in a remainder of 28.
Write down 8 as next digit of the result. 
Result so far: 108.0
Subtracting 640 from 668 leaves us with 28.
Append the next digit (7) from the dividend to 28 and continue with: 287 / 80

Moving on to step 5:
The number 80 fits into 287 3 times, leaving a remainder of 47.
Use 3 as the next digit of our solution. 
Result so far: 1083.0
Subtracting 240 from 287 leaves us with 47.
Take the next digit (1) from the dividend and append it to 47, then repeat: 471 / 80

On to step 6:
If we divide 471 by 80, we get 5 and a remainder of 71.
Put 5 as the next digit of the answer. 
Result so far: 10835.0
Subtracting 400 from 471 leaves us with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Let's proceed to step 7:
The number 80 fits into 710 8 times, leaving a remainder of 70.
Use 8 as the next digit of our solution. 
Result so far: 10835.8
Subtract 640 from 710 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 8:
700 divided by 80 is 8 with a remainder of 60.
Write down 8 as next digit of the result. 
Result so far: 10835.88
The remainder is 60 after subtracting 640 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

In conclusion, the division gives 10835.88 with a balance of 0.06.